Choose the underlined part that needs correcting in each sentence below. 45. I have seen (A) the film before, so I knew(B) how (C) it ended (D). 46. It was obvious (A) that Bill worked (B) hard because (C) he was very tired when (D) I saw him. 47. It's only (A) my first week in (B) Wales, and I see (C) so many (D) interesting things already. 48. The spaceship won't launch (A) until (B) they have done(C) a (D) final check. 49. A koala (A), spent (B) about 18-20 hours sleeping (C) in tree forks. (D). Mark the letter A, B, C or D on your answer sheet to indicate the most suitable response to complete each of the following exchanges. 50. A: My closest friend misunderstood me. - B: A. Well done! B. If I were you I would get some sleep. C. It's very kind of you to do that! D. I understand how you feel. 51. A: I won the first prize in the English speaking contest. - B: A. Stay calm. Everything will be alright! B. Congratulations! C. Make yourself at home D. Don't mention it.